F Share Data as of 03/31/2021. Growth Leaders Fund F Share Net Expense Ratio: 0.68% Gross Expense Ratio: 0.78%. Developing Growth Fund F Share Net Expense Ratio: 0.78% Gross Expense Ratio: 0.78%. Micro Cap Growth Fund F Share Net Expense Ratio: 1.06% Gross Expense Ratio: 1.16%.

¹Inception date 06/30/2011. *Developing Growth Fund will close to new shareholders on 03/05/2021. Micro Cap Growth Fund will close to new shareholders on 03/14/2021.

Performance data quoted reflect past performance and are no guarantee of future results. Current performance may be higher or lower than the performance quoted. The investment return and principal value of an investment in the Fund will fluctuate so that shares, on any given day or when redeemed, may be worth more or less than their original cost. You can obtain performance data current to the most recent month-end by calling Lord Abbett at 888-522-2388 or referring to lordabbett.com.

Fund performance is based on total return at net asset value, including the reinvestment of all distributions, but excludes sales charges which are not applicable to Class F Shares.

The net expense ratios for the Growth Leaders Fund and the Micro Cap Growth Fund take into account a contractual fee waiver agreement scheduled to remain in place through 02/28/2021 for the Growth Leaders Fund, and 02/28/2022 for the Micro Cap Growth Fund. For periods when fees were waived, the share class benefited by not bearing such expenses. Without such waivers, performance would have been lower.

Morningstar Category Rank Information: The Growth Leaders Fund share F rankings within the Morningstar Large Growth Category as of 03/31/2021 for the one-year period, 6% (74/1282); three-year, 5% (51/1186); five-year, 6% (55/1065). The Developing Growth Fund Class F share rankings within the Morningstar Small Growth Funds Category as of 03/31/2020 for the one-year period, 20% (94/619); three-year, 8% (37/576); five-year, 8% (31/503); 10-year, 8% (26/379). The Micro Cap Growth Fund Class F share rankings within the Morningstar Small Growth Funds Category as of 03/31/2021 for the one-year period, 3% (619); three-year, 4% (576); five-year, 3% (503); 10-year, 2% (379). Source: Morningstar, Inc.  Morningstar peer group rankings are based on all share classes within the category and include the reinvested dividends and capital gains, if any, and exclude sales charges. The funds are ranked within a universe of funds similar in investment objectives.

*Industry experience as of 01/01/2020.

The Russell 2000® Growth Index measures the performance of those Russell 2000 companies with higher price-to-book ratios and higher forecasted growth values.

The Russell 1000® Growth Index a stock market index that tracks the highest-ranking 1,000 stocks in the Russell 3000 Index, which represent about 90% of the total market capitalization of that index.

The Russell Microcap Growth Index measures the performance of the microcap growth segment of the U.S. equity market. 

Morningstar Large Growth Category: includes funds that seek capital appreciation by investing in large domestic stocks that are growth-oriented. Large-cap stocks have market capitalizations greater than $5 billion. Growth is defined based on high price/book and price/cash flow ratios. Funds will typically have more than 70% of assets invested in U.S. stocks.

Morningstar Small Growth IndexSmall-growth portfolios focus on faster-growing companies whose shares are at the lower end of the market-capitalization range. These portfolios tend to favor companies in up-and-coming industries or young firms in their early growth stages. Because these businesses are fast-growing and often richly valued, their stocks tend to be volatile. Stocks in the bottom 10% of the capitalization of the U.S. equity market are defined as small cap. Growth is defined based on fast growth (high growth rates for earnings, sales, book value, and cash flow) and high valuations (high price ratios and low dividend yields).